<?php

/**
 * This is the model class for table "ew_question_choice".
 *
 * The followings are the available columns in table 'ew_question_choice':
 * @property integer $id
 * @property integer $questionId
 * @property integer $isCorrect
 * @property string $content
 */
class Answer extends CActiveRecord
{
	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return '{{answer}}';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('questionId,content', 'required'),
			array('questionId, isCorrect', 'numerical', 'integerOnly'=>true),
			array('content,corrects', 'safe'),
			// The following rule is used by search().
			// @todo Please remove those attributes that should not be searched.
			array('id, questionId, isCorrect, content', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
			'question'=>array(self::BELONGS_TO,'Question','questionId'),
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		$labels = array(
			'id' => 'ID',
			'questionId' => 'Question',
			'isCorrect' => '设为正确',
	 		'corrects'=>'设为正确',
			'content' => '答案',
		);
		return $labels;
	}
	
	public function afterSave(){
		$question = $this->question;
		$arrSolution = explode(',', $question->solution);
		if($this->isCorrect){
			if(!in_array($this->id,$arrSolution))
				$arrSolution[] = $this->id;
		}else{
			if(in_array($this->id,$arrSolution)){
				DxdUtil::array_remove($arrSolution, $this->id);
			}
		}
		$question->solution = implode(',', $arrSolution);
		$question->save();
	}


	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 *
	 * Typical usecase:
	 * - Initialize the model fields with values from filter form.
	 * - Execute this method to get CActiveDataProvider instance which will filter
	 * models according to data in model fields.
	 * - Pass data provider to CGridView, CListView or any similar widget.
	 *
	 * @return CActiveDataProvider the data provider that can return the models
	 * based on the search/filter conditions.
	 */
	public function search()
	{
		// @todo Please modify the following code to remove attributes that should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id);
		$criteria->compare('questionId',$this->questionId);
		$criteria->compare('isCorrect',$this->isCorrect);
		$criteria->compare('content',$this->content,true);

		return new CActiveDataProvider($this, array(
			'criteria'=>$criteria,
		));
	}

	/**
	 * Returns the static model of the specified AR class.
	 * Please note that you should have this exact method in all your CActiveRecord descendants!
	 * @param string $className active record class name.
	 * @return QuestionChoice the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}
}
